EP 1732350 A4 20110223 - SPEAKER DEVICE
Title (en)
SPEAKER DEVICE
Title (de)
LAUTSPRECHERANORDNUNG
Title (fr)
DISPOSITIF DE HAUT-PARLEUR
Publication
Application
Priority
- JP 2005005342 W 20050324
- JP 2004103759 A 20040331
Abstract (en)
[origin: EP1732350A1] A loudspeaker unit (2) of a loudspeaker system (1) is fitted to a cabinet (4) . An absorbent (3) is disposed in a hollow chamber (R) inside the cabinet (4) and absorbs a gas inside the hollow chamber (R). A phase inverting mechanism (8) inverts the phase by resonating with a sound of a specific frequency radiated from the loudspeaker unit (2) into the hollow chamber (R) and radiates this sound to outside. The watertight means of the phase inverting mechanism (8) prevents invasion of moisture into inside the hollow chamber (R) from outside the cabinet (4) through the phase inverting mechanism (8).
IPC 8 full level
H04R 1/02 (2006.01); H04R 1/00 (2006.01); H04R 1/28 (2006.01)
CPC (source: EP US)
H04R 1/2819 (2013.01 - EP US); H04R 1/2834 (2013.01 - EP US); H04R 1/2803 (2013.01 - EP US)
Citation (search report)
- [X] US 3674108 A 19720704 - BEATTY DAVID L
- [X] GB 1406427 A 19750917 - FERROGRAPH CO LTD
- [X] US 4076097 A 19780228 - CLARKE THOMAS LOWE
- [X] US 4657108 A 19870414 - WARD BRIAN D [AU]
- See references of WO 2005099300A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1732350 A1 20061213; EP 1732350 A4 20110223; CN 1939086 A 20070328; JP WO2005099300 A1 20070816; US 2007147645 A1 20070628; US 7463747 B2 20081209; WO 2005099300 A1 20051020
DOCDB simple family (application)
EP 05727116 A 20050324; CN 200580010229 A 20050324; JP 2005005342 W 20050324; JP 2006512006 A 20050324; US 59450405 A 20050324